Grandiflora Rose Plant Named &#39;Meikanaro&#39;

ABSTRACT

A new and distinct variety of Grandiflora rose plant is provided that abundantly and substantially continuously forms attractive double blossoms that are yellow finishing to cream yellow in coloration. The vegetation is vigorous and a bushy growth habit is displayed. Attractive conical buds are formed, and the disease resistance is good. The plant is particularly well suited for providing distinctive attractive ornamentation in the landscape.

BOTANICAL/COMMERCIAL CLASSIFICATION

Rosa hybrida/Grandiflora Rose Plant

VARIETAL DENOMINATION

cv. Meikanaro

SUMMARY OF THE INVENTION

The new variety of Rosa hybrida Grandiflora rose plant was created in France by artificial pollination wherein two parents were crossed which previously had been studied in the hope that they would contribute the desired characteristics. The female parent (i.e., the seed parent) was the product of the cross of the ‘Bucbi’ variety (U.S. Plant Pat. No. 4,225) and the ‘Meipsilon’ variety (non-patented in the United States). The male parent (i.e., the pollen parent) was the ‘Meironsee’ variety (U.S. Plant Pat. No. 8,496).

The parentage of the new variety can be summarized as follows:

(‘Bucbi’×‘Meipsilon’)×‘Meironsee’.

The seeds resulting from the above pollination were sown and small plants were obtained which were physically and biologically different from each other. Selective study resulted in the identification of a single plant of the new variety.

It was found that the new Grandiflora rose plant of the present invention:

(a) forms vigorous vegetation,

(b) forms a bushy growth habit,

(c) forms nicely shaped conical buds,

(d) abundantly and substantially continuously forms attractive double blossoms that are yellow finishing to cream yellow in coloration,

(e) displays attractive dense glossy dark green foliage,

(f) displays good disease resistance, and

(g) is particularly well suited for providing distinctive attractive ornamentation in the landscape.

The yellow blossom coloration contrasts nicely with the glossy dark green foliage.

The new variety well meets the needs of the horticultural industry and can be grown to advantage in parks and gardens.

The new variety can be readily distinguished from its ancestors upon an inspection of the blossoms. For instance, the ‘Bucbi’ variety forms large pink blossoms. The ‘Meipsilon’ variety forms bicolored red and yellow blossoms. The ‘Meironsee’ vareity forms orange blossoms.

The new variety has been found to undergo asexual propagation at Le Cannet des Maures, Var, France, by a number of routes, including budding, grafting, and the use of cuttings. Such asexual propagation by the above-mentioned techniques has shown that the characteristics of the new variety are stable and are strictly transmissible by such asexual propagation from one generation to another. Accordingly, the new variety undergoes asexual propagation in a true-to-type manner.

The new variety has been named ‘Meikanaro’. During test evaluation, the new variety has been named an All-America Rose Selections (AARS) winner for 2012.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph shows as nearly true as it is reasonably possible to make the same in a color illustration of this character, typical specimens of plant parts of the new variety. The rose plants of the new variety were approximately two years of age and were observed during October while budded on Rosa laxa understock and growing outdoors at Le Cannet des Maures, Var, France.

FIG. 1 illustrates a specimen of a young shoot;

FIG. 2 illustrates a specimen of a floral bud at the beginning of the opening of the sepals;

FIG. 3 illustrates a specimen of a floral bud at the further opening of the sepals;

FIG. 4 illustrates a specimen of a floral bud at the opening of the petals;

FIG. 5 illustrates a specimen of a flower in the course of opening;

FIG. 6 illustrates a specimen of an open flower—plan view—obverse;

FIG. 7 illustrates a specimen of an open flower—plan view—reverse;

FIG. 8 illustrates a specimen of a fully open flower—plan view—obverse;

FIG. 9 illustrates a specimen of a fully open flower—plan view—reverse;

FIG. 10 illustrates a specimen of a floral receptacle showing arrangement of the stamens and pistils;

FIG. 11 illustrates a specimen of a floral receptacle showing arrangement of the pistils (stamens removed);

FIG. 12 illustrates a specimen of a flowering stem;

FIG. 13 illustrates a specimen of a main branch;

FIG. 14 illustrates a specimen of a leaf with 3 leaflets—plan view—upper surface;

FIG. 15 illustrates a specimen of a leaf with 5 leaflets—plan view—under surface;

FIG. 16 illustrates a specimen of a leaf with 7 leaflets—plan view—upper surface; and

FIG. 17 illustrates a specimen of a cluster of buds.

DETAILED DESCRIPTION

The chart used in the identification of the colors is that of The Royal Horticultural Society (R.H.S. Colour Chart) except where ordinary color terms are utilized. Such common color terms are to be accorded their customary dictionary significance. The description is based upon the observation of plants of the new variety at an age of approximately two years during the month of October while being grown at Le Cannet des Maures, Var, France.

-   Class: Grandiflora. -   Plant:     -   -   Growth.—habit bushy.         -   Height.—commonly approximately 5.5 feet at an age of two             years.         -   Width.—commonly approximately 4.5 feet at an age of two             years. -   Branches:     -   -   Color.—young stems: commonly near Green Group 143A. — adult             wood: commonly near Green Group 138A.         -   Thorns.—configuration: rather upright and elongated,             slightly concave on the upper surface, short and rounded on             the under surface, and with short and oval bases. — quantity             and size on young stems: commonly approximately 5 on average             having lengths of approximately 0.7 cm over a stem length of             10 cm, and commonly bear no small prickles. — quantity and             size on adult stems: commonly approximately 10 on average             having lengths of approximately 0.8 cm on average over a             stem length of 10 cm, and commonly approximately 4 on             average over a stem length of 10 cm having lengths of             approximately 0.4 cm. color: on young stems near             Yellow-Green Group 144B, and on adult stems longer thorns             commonly are near Greyed-Orange Group 166C and shorter stems             commonly are near Greyed-Orange Group 165C. -   Leaves:     -   -   Overall appearance.—very dense dark green glossy foliage.         -   Leaflets.—shape: generally oval. number 3, 5 and 7. (most             often). apex: acuminate. base: rounded. — size: the terminal             leaflets commonly are approximately 6.5 cm in length on             average and approximately 4 cm in width on average. —             serration: slightly denticulate, small and single. —             texture: firm, and smooth, and glossy on the upper surface.             color (young foliage): near Green Group 137A on the upper             surface, and near Yellow-Green Group 146B on the under             surface. color (adult foliage): near Green Group 135A on the             upper surface, and near Green Group 137C on the under             surface.         -   Petiole.—length: commonly approximately 2.8 cm on average. —             texture: slightly glandular on the upper surface and             commonly without prickles on the under surface. — color near             Green Group 143A on the upper surface, and near Yellow-Green             Group 144B on the under surface.         -   Rachis.—color. near Yellow-Green Group 146A on the upper             surface and near Green Group 143C on the under surface.         -   Stipules.—general appearance: adnate, pectinate, and             relatively broad. — size: commonly approximately 1.6 cm in             length on average, and approximately 0.8 cm in width on             average. — color. near Green Group 143A on the upper             surface, and near Green Group 141B and Green Group 141C on             the under surface. -   Inflorescence:     -   -   Number of flowers.—commonly approximately 1 to 3 double             blossoms per stem.         -   Peduncle.—somewhat glandular, commonly approximately 5 to 7             cm in length on average, approximately 3 mm in diameter on             average, and near Yellow-Green Group 144A in coloration.         -   Sepals.—shape: longish pointed, and somewhat broad and             upright at the base. — texture: tomentose on both surfaces.             size: approximately 4.7 cm in length on average, and             approximately 1.2 cm in width on average at the base. color:             near Green Group 137C on the upper surface, and near Green             Group 143B on the under surface.         -   Buds.—shape: generally conical and medium-sized. — length:             approximately 1.5 cm on average. — width: approximately 1 cm             at the widest point on average. — color as the calyx breaks,             near Yellow Group 3A on the upper surface and near Yellow             Group 3C on the under surface.         -   Flower.—diameter. approximately 9 to 10 cm on average. —             shape: cup-shaped. — color (in course of opening): upper             side: near Yellow Group 10A. under side: near Yellow Group             11B. — color (when open): upper side: near Yellow Group 11B.             under side: nearly Yellow Group 12C. color stability petals             lighten somewhat with maturity. — fragrance: not noticeable.             — petal number commonly approximately 33 to 35 on average             under normal growing conditions. — petal shape: commonly             display a rounded tip and a somewhat rounded base. — petal             arrangement imbricated and commonly without petaloids. —             petal length: commonly approximately 4.3 cm on average. —             petal width: commonly approximately 5 cm on average. — petal             drop: good with the petals commonly detaching cleanly before             drying. — stamen number commonly approximately 153 on             average. — anthers: regularly arranged around the styles,             commonly approximately 0.3 cm in length on average, and near             Yellow Group 13A in coloration. — filaments: commonly             approximately 0.6 cm in length on average, and near Yellow             Group 9A in coloration. — pistils: commonly approximately             139 on average. — styles: commonly approximately 0.7 cm in             length on average, and near Yellow Group 2D in coloration. —             stigmas: commonly approximately 0.2 cm in size and near Red             Group 42A in coloration. — receptacle: pitcher-shaped,             commonly approximately 0.8 cm in length on average, commonly             approximately 0.8 cm in width at the widest point, smooth in             texture, and near Green Group 143B in coloration. -   Development:     -   -   Vegetation.—very strong.         -   Blooming.—early season, abundant and substantially             continuous.         -   Tolerance to diseases.—very good during observations to             date. 

1. A new and distinct Grandiflora rose plant characterized by the following characteristics: (a) forms vigorous vegetation, (b) forms a bushy growth habit, (c) forms nicely shaped conical buds, (d) abundantly and substantially continuously forms attractive double blossoms that are yellow finishing to cream yellow in coloration, (e) displays attractive dense glossy dark green foliage, (f) displays good disease resistance, and (g) is particularly well suited for providing distinctive attractive ornamentation in the landscape; substantially as shown and described. 